DS_1215F_003
73S1215F Data Sheet
3.3 Digital IO Characteristics
These requirements pertain to digital I/O pin types with consideration of the specific pin function and
configuration. The LED(3:0) pins have pull-ups that may be enabled. The Row pins have 100KΩ pull-
ups.
Symbol Parameter
Conditions
Ioh =-2mA
Min.
0.8 *VDD
0
Typ.
Max.
VDD
0.3
Unit
V
Voh
Vol
Vih
Vil
Output level, high
Output level, low
Input voltage, high
Input voltage, low
Leakage current
Iol=2mA
V
2.7v < VDD <3.6v
2.7v < VDD <3.6v
0 < Vin < VDD
1.8
VDD+0.3
0.6
V
-0.3
V
Ileak
-5
5
μA
All output modes
disabled, pull-up/downs
disabled
Ipu
Ipd
Pull-up current
If provided and enabled,
Vout < 0.1v
-5
μA
μA
Pull-down current
If provided and enabled,
Vout > VDD – 0.1v
5
Symbol Parameter
Conditions
Min.
Typ.
Max.
Unit
Iled
LED drive current
Vout = 1.3V,
2.7v < VDD < 3.6v
1.7
3.4
8.5
2
4
10
2.3
4.6
11.5
mA
Iolkrow
Iolkcol
Keypad Row output
low current
0.0v < Voh < 0.1v
when pull-up R is
enabled
-40
-100
μA
Keypad column
0.0v < Voh < 0.1v
-1.5
-3
mA
output high current
when col. is pulled low
Rev. 1.4
113
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